如何获取嵌套的"Sequelize"数据？

Question

我已经创建了一个基于 PostgreSQL 数据库的 Sequelize ORM。我在 product 和 reviews 之间实现了一些关系。而且，每个 review 都由 user 发布。因此，当我查询单个产品时，我想要 product、reviews 和 review 内的数据，我想查看谁发布的以及 user。

{
    "id": 1,
    "name": "Rounded Neck T-Shirt",
    "title": "some title",
    "snippet": "some snippet od demin t shirt",
    "details": "some details",
    "moreInfo": "some moreInfo",
    "size": "size will be in a seperate table this will be FK",
    "stock": 452,
    "askingPrice": 4299,
    "offPrice": null,
    "offer": null,
    "ratings": null,
    "images": null,
    "pictureUrl": "https://loopinfosol.in/themeforest/ekka-html-v31/ekka-html/assets/images/product-image/6_2.jpg",
    "purchaseCost": 4200,
    "createdAt": "2022-02-14T10:59:55.999Z",
    "updatedAt": "2022-02-14T11:07:12.916Z",
    "categoryId": 1,
    "userId": 1,
    "reviews": [
        {
            "id": 1,
            "rating": 5,
            "comment": "Very nice product",
            "createdAt": "2022-02-14T17:28:22.680Z",
            "updatedAt": "2022-02-14T17:28:22.680Z",
            "productId": 1,
            "userId": 1
        }
    ]
}

这里，“userId”是注册的user id 的外键。我也想在“评论”中查看用户数据。我该怎么做？

以上JSON数据是通过查询以下代码得到的

  Product.findOne({
    include: [Review],
    where: { id: req.params.id },
  })

Answer 1

如果您已经有了像 Review.belongsTo(User, ... 这样的关联定义，那么您只需要用 User 模型指示一个嵌套的 include 选项：

Product.findOne({
    include: [{
     model: Review,
     include: [{
       model: User
     }]
    }],
    where: { id: req.params.id },
  })

如何获取嵌套的"Sequelize"数据？

How to get nested "Sequelize" data?

postgresql

sequelize.js